aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/pseudoramiX
diff options
context:
space:
mode:
Diffstat (limited to 'xorg-server/pseudoramiX')
-rw-r--r--xorg-server/pseudoramiX/Makefile.am7
-rw-r--r--xorg-server/pseudoramiX/pseudoramiX.c516
-rw-r--r--xorg-server/pseudoramiX/pseudoramiX.h10
3 files changed, 533 insertions, 0 deletions
diff --git a/xorg-server/pseudoramiX/Makefile.am b/xorg-server/pseudoramiX/Makefile.am
new file mode 100644
index 000000000..17b664b9e
--- /dev/null
+++ b/xorg-server/pseudoramiX/Makefile.am
@@ -0,0 +1,7 @@
+# Fake Xinerama extension
+
+AM_CFLAGS = $(DIX_CFLAGS)
+
+noinst_LTLIBRARIES = libPseudoramiX.la
+
+libPseudoramiX_la_SOURCES = pseudoramiX.c pseudoramiX.h
diff --git a/xorg-server/pseudoramiX/pseudoramiX.c b/xorg-server/pseudoramiX/pseudoramiX.c
new file mode 100644
index 000000000..23dbc7328
--- /dev/null
+++ b/xorg-server/pseudoramiX/pseudoramiX.c
@@ -0,0 +1,516 @@
+/*
+ * Minimal implementation of PanoramiX/Xinerama
+ *
+ * This is used in rootless mode where the underlying window server
+ * already provides an abstracted view of multiple screens as one
+ * large screen area.
+ *
+ * This code is largely based on panoramiX.c, which contains the
+ * following copyright notice:
+ */
+/*****************************************************************
+ Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software.
+
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
+ BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR OTHER LIABILITY,
+ WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+ IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ Except as contained in this notice, the name of Digital Equipment Corporation
+ shall not be used in advertising or otherwise to promote the sale, use or other
+ dealings in this Software without prior written authorization from Digital
+ Equipment Corporation.
+ ******************************************************************/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "pseudoramiX.h"
+#include "extnsionst.h"
+#include "extinit.h"
+#include "dixstruct.h"
+#include "window.h"
+#include <X11/extensions/panoramiXproto.h>
+#include "globals.h"
+
+#define TRACE PseudoramiXTrace("TRACE " __FILE__ ":%s",__FUNCTION__)
+#define DEBUG_LOG PseudoramiXDebug
+
+Bool noPseudoramiXExtension = FALSE;
+
+extern int
+ProcPanoramiXQueryVersion(ClientPtr client);
+
+static void
+PseudoramiXResetProc(ExtensionEntry *extEntry);
+
+static int
+ProcPseudoramiXQueryVersion(ClientPtr client);
+static int
+ProcPseudoramiXGetState(ClientPtr client);
+static int
+ProcPseudoramiXGetScreenCount(ClientPtr client);
+static int
+ProcPseudoramiXGetScreenSize(ClientPtr client);
+static int
+ProcPseudoramiXIsActive(ClientPtr client);
+static int
+ProcPseudoramiXQueryScreens(ClientPtr client);
+static int
+ProcPseudoramiXDispatch(ClientPtr client);
+
+static int
+SProcPseudoramiXQueryVersion(ClientPtr client);
+static int
+SProcPseudoramiXGetState(ClientPtr client);
+static int
+SProcPseudoramiXGetScreenCount(ClientPtr client);
+static int
+SProcPseudoramiXGetScreenSize(ClientPtr client);
+static int
+SProcPseudoramiXIsActive(ClientPtr client);
+static int
+SProcPseudoramiXQueryScreens(ClientPtr client);
+static int
+SProcPseudoramiXDispatch(ClientPtr client);
+
+typedef struct {
+ int x;
+ int y;
+ int w;
+ int h;
+} PseudoramiXScreenRec;
+
+static PseudoramiXScreenRec *pseudoramiXScreens = NULL;
+static int pseudoramiXScreensAllocated = 0;
+static int pseudoramiXNumScreens = 0;
+static unsigned long pseudoramiXGeneration = 0;
+
+static void
+PseudoramiXTrace(const char *format, ...)
+{
+ va_list ap;
+
+ va_start(ap, format);
+ LogVMessageVerb(X_NONE, 10, format, ap);
+ va_end(ap);
+}
+
+static void
+PseudoramiXDebug(const char *format, ...)
+{
+ va_list ap;
+
+ va_start(ap, format);
+ LogVMessageVerb(X_NONE, 3, format, ap);
+ va_end(ap);
+}
+
+// Add a PseudoramiX screen.
+// The rest of the X server will know nothing about this screen.
+// Can be called before or after extension init.
+// Screens must be re-added once per generation.
+void
+PseudoramiXAddScreen(int x, int y, int w, int h)
+{
+ PseudoramiXScreenRec *s;
+
+ if (noPseudoramiXExtension) return;
+
+ if (pseudoramiXNumScreens == pseudoramiXScreensAllocated) {
+ pseudoramiXScreensAllocated += pseudoramiXScreensAllocated + 1;
+ pseudoramiXScreens = realloc(pseudoramiXScreens,
+ pseudoramiXScreensAllocated *
+ sizeof(PseudoramiXScreenRec));
+ }
+
+ DEBUG_LOG("x: %d, y: %d, w: %d, h: %d\n", x, y, w, h);
+
+ s = &pseudoramiXScreens[pseudoramiXNumScreens++];
+ s->x = x;
+ s->y = y;
+ s->w = w;
+ s->h = h;
+}
+
+// Initialize PseudoramiX.
+// Copied from PanoramiXExtensionInit
+void
+PseudoramiXExtensionInit(void)
+{
+ Bool success = FALSE;
+ ExtensionEntry *extEntry;
+
+ if (noPseudoramiXExtension) return;
+
+ TRACE;
+
+ /* Even with only one screen we need to enable PseudoramiX to allow
+ dynamic screen configuration changes. */
+#if 0
+ if (pseudoramiXNumScreens == 1) {
+ // Only one screen - disable Xinerama extension.
+ noPseudoramiXExtension = TRUE;
+ return;
+ }
+#endif
+
+ if (pseudoramiXGeneration != serverGeneration) {
+ extEntry = AddExtension(PANORAMIX_PROTOCOL_NAME, 0, 0,
+ ProcPseudoramiXDispatch,
+ SProcPseudoramiXDispatch,
+ PseudoramiXResetProc,
+ StandardMinorOpcode);
+ if (!extEntry) {
+ ErrorF("PseudoramiXExtensionInit(): AddExtension failed\n");
+ }
+ else {
+ pseudoramiXGeneration = serverGeneration;
+ success = TRUE;
+ }
+ }
+
+ if (!success) {
+ ErrorF("%s Extension (PseudoramiX) failed to initialize\n",
+ PANORAMIX_PROTOCOL_NAME);
+ return;
+ }
+}
+
+void
+PseudoramiXResetScreens(void)
+{
+ TRACE;
+
+ pseudoramiXNumScreens = 0;
+}
+
+static void
+PseudoramiXResetProc(ExtensionEntry *extEntry)
+{
+ TRACE;
+
+ PseudoramiXResetScreens();
+}
+
+// was PanoramiX
+static int
+ProcPseudoramiXQueryVersion(ClientPtr client)
+{
+ TRACE;
+
+ return ProcPanoramiXQueryVersion(client);
+}
+
+// was PanoramiX
+static int
+ProcPseudoramiXGetState(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetStateReq);
+ WindowPtr pWin;
+ xPanoramiXGetStateReply rep;
+ register int rc;
+
+ TRACE;
+
+ REQUEST_SIZE_MATCH(xPanoramiXGetStateReq);
+ rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ rep.state = !noPseudoramiXExtension;
+ rep.window = stuff->window;
+ if (client->swapped) {
+ swaps(&rep.sequenceNumber);
+ swapl(&rep.length);
+ swapl(&rep.window);
+ }
+ WriteToClient(client, sizeof(xPanoramiXGetStateReply),&rep);
+ return Success;
+}
+
+// was PanoramiX
+static int
+ProcPseudoramiXGetScreenCount(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetScreenCountReq);
+ WindowPtr pWin;
+ xPanoramiXGetScreenCountReply rep;
+ register int rc;
+
+ TRACE;
+
+ REQUEST_SIZE_MATCH(xPanoramiXGetScreenCountReq);
+ rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ rep.ScreenCount = pseudoramiXNumScreens;
+ rep.window = stuff->window;
+ if (client->swapped) {
+ swaps(&rep.sequenceNumber);
+ swapl(&rep.length);
+ swapl(&rep.window);
+ }
+ WriteToClient(client, sizeof(xPanoramiXGetScreenCountReply),&rep);
+ return Success;
+}
+
+// was PanoramiX
+static int
+ProcPseudoramiXGetScreenSize(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetScreenSizeReq);
+ WindowPtr pWin;
+ xPanoramiXGetScreenSizeReply rep;
+ register int rc;
+
+ TRACE;
+
+ if (stuff->screen >= pseudoramiXNumScreens)
+ return BadMatch;
+
+ REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
+ rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ /* screen dimensions */
+ rep.width = pseudoramiXScreens[stuff->screen].w;
+ // was screenInfo.screens[stuff->screen]->width;
+ rep.height = pseudoramiXScreens[stuff->screen].h;
+ // was screenInfo.screens[stuff->screen]->height;
+ rep.window = stuff->window;
+ rep.screen = stuff->screen;
+ if (client->swapped) {
+ swaps(&rep.sequenceNumber);
+ swapl(&rep.length);
+ swapl(&rep.width);
+ swapl(&rep.height);
+ swapl(&rep.window);
+ swapl(&rep.screen);
+ }
+ WriteToClient(client, sizeof(xPanoramiXGetScreenSizeReply),&rep);
+ return Success;
+}
+
+// was Xinerama
+static int
+ProcPseudoramiXIsActive(ClientPtr client)
+{
+ /* REQUEST(xXineramaIsActiveReq); */
+ xXineramaIsActiveReply rep;
+
+ TRACE;
+
+ REQUEST_SIZE_MATCH(xXineramaIsActiveReq);
+
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ rep.state = !noPseudoramiXExtension;
+ if (client->swapped) {
+ swaps(&rep.sequenceNumber);
+ swapl(&rep.length);
+ swapl(&rep.state);
+ }
+ WriteToClient(client, sizeof(xXineramaIsActiveReply),&rep);
+ return Success;
+}
+
+// was Xinerama
+static int
+ProcPseudoramiXQueryScreens(ClientPtr client)
+{
+ /* REQUEST(xXineramaQueryScreensReq); */
+ xXineramaQueryScreensReply rep;
+
+ DEBUG_LOG("noPseudoramiXExtension=%d, pseudoramiXNumScreens=%d\n",
+ noPseudoramiXExtension,
+ pseudoramiXNumScreens);
+
+ REQUEST_SIZE_MATCH(xXineramaQueryScreensReq);
+
+ rep.type = X_Reply;
+ rep.sequenceNumber = client->sequence;
+ rep.number = noPseudoramiXExtension ? 0 : pseudoramiXNumScreens;
+ rep.length = bytes_to_int32(rep.number * sz_XineramaScreenInfo);
+ if (client->swapped) {
+ swaps(&rep.sequenceNumber);
+ swapl(&rep.length);
+ swapl(&rep.number);
+ }
+ WriteToClient(client, sizeof(xXineramaQueryScreensReply),&rep);
+
+ if (!noPseudoramiXExtension) {
+ xXineramaScreenInfo scratch;
+ int i;
+
+ for (i = 0; i < pseudoramiXNumScreens; i++) {
+ scratch.x_org = pseudoramiXScreens[i].x;
+ scratch.y_org = pseudoramiXScreens[i].y;
+ scratch.width = pseudoramiXScreens[i].w;
+ scratch.height = pseudoramiXScreens[i].h;
+
+ if (client->swapped) {
+ swaps(&scratch.x_org);
+ swaps(&scratch.y_org);
+ swaps(&scratch.width);
+ swaps(&scratch.height);
+ }
+ WriteToClient(client, sz_XineramaScreenInfo,&scratch);
+ }
+ }
+
+ return Success;
+}
+
+// was PanoramiX
+static int
+ProcPseudoramiXDispatch(ClientPtr client)
+{
+ REQUEST(xReq);
+ TRACE;
+ switch (stuff->data) {
+ case X_PanoramiXQueryVersion:
+ return ProcPseudoramiXQueryVersion(client);
+
+ case X_PanoramiXGetState:
+ return ProcPseudoramiXGetState(client);
+
+ case X_PanoramiXGetScreenCount:
+ return ProcPseudoramiXGetScreenCount(client);
+
+ case X_PanoramiXGetScreenSize:
+ return ProcPseudoramiXGetScreenSize(client);
+
+ case X_XineramaIsActive:
+ return ProcPseudoramiXIsActive(client);
+
+ case X_XineramaQueryScreens:
+ return ProcPseudoramiXQueryScreens(client);
+ }
+ return BadRequest;
+}
+
+static int
+SProcPseudoramiXQueryVersion(ClientPtr client)
+{
+ REQUEST(xPanoramiXQueryVersionReq);
+
+ TRACE;
+
+ swaps(&stuff->length);
+ REQUEST_SIZE_MATCH(xPanoramiXQueryVersionReq);
+ return ProcPseudoramiXQueryVersion(client);
+}
+
+static int
+SProcPseudoramiXGetState(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetStateReq);
+
+ TRACE;
+
+ swaps(&stuff->length);
+ REQUEST_SIZE_MATCH(xPanoramiXGetStateReq);
+ return ProcPseudoramiXGetState(client);
+}
+
+static int
+SProcPseudoramiXGetScreenCount(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetScreenCountReq);
+
+ TRACE;
+
+ swaps(&stuff->length);
+ REQUEST_SIZE_MATCH(xPanoramiXGetScreenCountReq);
+ return ProcPseudoramiXGetScreenCount(client);
+}
+
+static int
+SProcPseudoramiXGetScreenSize(ClientPtr client)
+{
+ REQUEST(xPanoramiXGetScreenSizeReq);
+
+ TRACE;
+
+ swaps(&stuff->length);
+ REQUEST_SIZE_MATCH(xPanoramiXGetScreenSizeReq);
+ return ProcPseudoramiXGetScreenSize(client);
+}
+
+static int
+SProcPseudoramiXIsActive(ClientPtr client)
+{
+ REQUEST(xXineramaIsActiveReq);
+
+ TRACE;
+
+ swaps(&stuff->length);
+ REQUEST_SIZE_MATCH(xXineramaIsActiveReq);
+ return ProcPseudoramiXIsActive(client);
+}
+
+static int
+SProcPseudoramiXQueryScreens(ClientPtr client)
+{
+ REQUEST(xXineramaQueryScreensReq);
+
+ TRACE;
+
+ swaps(&stuff->length);
+ REQUEST_SIZE_MATCH(xXineramaQueryScreensReq);
+ return ProcPseudoramiXQueryScreens(client);
+}
+
+static int
+SProcPseudoramiXDispatch(ClientPtr client)
+{
+ REQUEST(xReq);
+
+ TRACE;
+
+ switch (stuff->data) {
+ case X_PanoramiXQueryVersion:
+ return SProcPseudoramiXQueryVersion(client);
+
+ case X_PanoramiXGetState:
+ return SProcPseudoramiXGetState(client);
+
+ case X_PanoramiXGetScreenCount:
+ return SProcPseudoramiXGetScreenCount(client);
+
+ case X_PanoramiXGetScreenSize:
+ return SProcPseudoramiXGetScreenSize(client);
+
+ case X_XineramaIsActive:
+ return SProcPseudoramiXIsActive(client);
+
+ case X_XineramaQueryScreens:
+ return SProcPseudoramiXQueryScreens(client);
+ }
+ return BadRequest;
+}
diff --git a/xorg-server/pseudoramiX/pseudoramiX.h b/xorg-server/pseudoramiX/pseudoramiX.h
new file mode 100644
index 000000000..f063919dd
--- /dev/null
+++ b/xorg-server/pseudoramiX/pseudoramiX.h
@@ -0,0 +1,10 @@
+/*
+ * Minimal implementation of PanoramiX/Xinerama
+ */
+
+extern int noPseudoramiXExtension;
+
+void
+PseudoramiXAddScreen(int x, int y, int w, int h);
+void
+PseudoramiXResetScreens(void);